Familiarity with the fuse and relay box (car power supply) in Iranian cars

Car electrical system in all types of cars: Car electrical system is one of the most basic and main parts of any car. In fact, it is the electricity that ignites the fuel and is considered as the driving force of the car. The vehicle electrical system is classified into two general groups:

1- Vehicle power supply system such as battery, dynamo, spark plug, etc.

2- Car power consumption system such as injector and car computer.

Many features of today’s luxury cars also work with electricity.

In the following, we will examine the following:

  1. Everything about the fuse box of Iranian cars
  2. Power supply system in all types of cars
  3. Other components of the car’s electrical system
  4. Car relay structure and its functions
  5. Additional investigations regarding the double relay of the car
  6. Car electricity and its importance in car performance
  7. What do you know about other car electrical components?

Stay with us until the end of the article.

Everything about the fuse box of Iranian cars

The car’s fuse box contains fuses that are responsible if the electric current is fluctuating; Cut off the current. Therefore, one of the solutions for security and protection of car electricity is to use a fuse. In fact, if the current of electricity entering the consumer’s device was more than the allowed limit; The fuse interrupts the current and protects the device from damage. To access the fuses, you can refer to the car fuse box. The fuse box is also placed in a place that is easily accessible to the driver.

You can refer to the manual of your car to find the location of the fuse box. In the said manual, a map of all the fuses and the task of powering each fuse to other components of the car are mentioned. This is where the importance of manuals and catalogs becomes clear. It should be noted that if you have lost your car’s manual; You can download it with a short search from the relevant sites. In addition, by downloading the fuse box application, you can have the fuse guide for different cars. This application is very useful especially for respectable mechanics.

Power supply system in all types of cars

In this part of the article, we will examine the different parts of a car power supply system.

Car battery: The battery is actually the car’s power source that stores electricity.

Spark plug: One of the main components and the interface between the electrical system and fuel supply is the spark plug. In other words, the spark plug produces a spark in the ignition chamber and will cause ignition. In this way, the car starts moving. Of course, the stages of ignition and car movement are not so simple, but mentioning more details is beyond the scope of this article.

Candle wire or candle wire: Wires are actually insulated wires that deliver electricity to the candles. Due to the high voltage current passing through, the spark plugs must be of very good quality in order to transmit the current with the least loss. The health of wires should be checked periodically and if their insulation is lost, they should be replaced. Otherwise, you will face excessive fuel consumption. In addition, if the fuel system of the car has a leak at the same time; lead to fire.

Fuses: the car’s fuse box was used when a connection occurred or the passing current exceeded the permissible limit; It is used to prevent damage to the car’s electrical system.

Alternator: Another main part of the car’s electrical system is the alternator, which is responsible for generating electricity in the car. In fact, the alternator converts mechanical energy into electrical energy and makes the car battery always full.

Other components of the car’s electrical system

But the electrical system of the car does not end here and as the famous saying goes, this story has a long head. In this section, we will explain the other components of this system for you dear ones. It should be noted that all the mentioned components are very important; So that by creating a defect in any of them, the performance of the car will suffer.

  1. Coil: The coil is responsible for boosting the car’s battery power to use the spark plug and create a spark.
  2. Delko: As we said, the electric current generated in the coil must reach the candles. Delco is responsible for delivering electricity and distributing it between the candles. Also, disconnecting and connecting the current is done by Delco.
  3. Electric circuits: The mentioned circuits are divided into main and secondary circuits. In fact, these circuits are responsible for the same distribution of electric current in the car. The main circuits include lighting circuit, charging circuit and spark circuit.
  4. Aftamat: The voltage produced in the alternator is regulated by aftamat. Because the electricity produced in the alternator is not regular and fluctuates.
  5. Sockets: The interface between power consumers and wires is called a socket.
  6. Controllers: As the name of these parts suggests, they are responsible for controlling the electric current. In fact, it is the responsibility of the controllers to connect and disconnect the electricity in each section.

Car relay structure and its functions

One of the most important components of the car’s electricity is the relay. Car relays are usually double. Car double relays consist of two separate relays, the first relay is known as the main relay and the second relay is known as the gas pump. In general, the relay is an electrical control device equipped with a 15-way connector. The main function of the relay is to send the required voltage to the engine and other components of the fuel system through the battery. Keep in mind that if the relay does not work properly; They cause the car to shut down or malfunction. Because the relay controls large currents with small currents. Each of the first or second relays has a coil with a magnetic core and a contact.

In most of the double relays available in the market, the relay plugs are made of brass and have tin plating. In this way, due to the passage of time, deposits and rust will not happen in the plugs. If relays were not to be used in cars and the wires were straight; The length and weight of wire bundles increased. Also, the wires through which the electric current passed with high intensity; They were getting hot. In this way, we saw the melting of the wires and their permanent replacement. In addition, the weight of the car increased significantly and we saw a decrease in the acceleration and speed of the car.

Additional investigations regarding the double relay of the car

As you know, car parts need current with different amperes in closed switch, open switch and car on mode. The role of the relay is to supply the same amperes needed by each part, if it fails, the car will not turn on anymore or it will work with problems. Listen to the alarm that in such a situation you must immediately think about repairing or replacing the relay; Because otherwise, your car will suffer more serious damage. But to which of the car parts does the relay provide the necessary electricity and voltage? The following parts are among the parts that the relay is responsible for supplying electricity to:

  1. Double coil
  2. Canister solenoid valve
  3. Throttle heater element
  4. Injectors
  5. vehicle computer (ECU)
  6. برق چراغ عیب یاب
  7. gas station
  8. Oxygen sensor heating element electricity
  9. The location of the relay is different in different cars. For example, the relay in the Peugeot 405 and Samand driver’s side is placed above the radiator and horizontally. While the double relay in Pride is located next to the battery and radiator water tank, and in Xantia, Peugeot RD and Pikan, it is also located in the ECU compartment. It is recommended, considering the importance of this part in the car, if it needs to be replaced; Use a high quality product.

10. Car electricity and its importance in car performance

  1. One of the main parts in the car’s electrical system is the battery, which we have provided a brief description of earlier. In this section, we will remind you of additional information in this regard. As we said, the battery stores the car’s electricity and when the car is off; Performs power supply operations to parts such as windshield wipers, window lifters, car starters, flashers, audio system, etc. The useful life of the battery is two years, after which it must be replaced. In addition, factors such as vibration and excessive heat can also reduce the useful life of this part.
  2. when the car is on; The battery is charged. Batteries are classified into two general categories: lead acid or wet and atomic or dry. Also, in terms of electric power, there are different types that are usually used in passenger cars of 12 volts and 60 amps.
  3. The next piece that we intend to explain; It is a dynamo. The dynamo works like a generator and converts mechanical energy into electrical energy. The name of this part in new cars is alternator. Mechanical energy is transferred to the dynamo by the dynamo belt, where electricity production takes place. Alternator usually produces 12 volts, but this number can be different in different cars. battery when the car is on; It is charged by a dynamo. So if the alternator breaks down; The battery also drains after a while. In addition, the alternator belt should be checked at certain intervals and replaced if it is torn or damaged.

What do you know about other car electrical components?

One of the most important components in the car’s electrical system is the coil. In fact, it can be said that the coil is a high pressure transformer that amplifies the electricity stored in the battery and the electricity produced in the alternator. Because the electricity produced in the alternator and stored in the battery are 12 volts. While this amount is too low to cause sparks and ignition. About 7,000 volts are needed to produce a spark in candles. Coel is responsible for supplying this amount of energy. But what is a coil and what is its structure? The structure of the coil is in the form of two primary and secondary coils, which work by the law of electromagnetic induction. Among the problems that arise due to the breakdown of the coil for your car; It is possible to refer to car rips, high fuel consumption, etc.

Another useful part in the car’s electrical system is called Delco. Delco is responsible for allocating high voltage electricity to the spark plugs of each cylinder as well as disconnecting and connecting the current in the coil. Of course, it is worth mentioning that in today’s new and modern cars, the Delco part has been removed and combined with the coil. Now that we are talking about candles, it is not bad to mention the types of candles here. There are different types of candles, some of which can be mentioned as cold candles, hot candles, nickel, platinum, multi-electrode, etc. Professional mechanics advise drivers to clean their car’s spark plugs every 8 to 10 thousand kilometers. Also, they should be replaced every 16 to 20 km.

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